Downfracking had opened universe after universe of ever-more-pure resources. The farther downfractal you traveled, the simpler the universe and the more you tended to slide backwards along the time axis. Each fractal was a perfect copy, from a distance, but simpler, and because they were simpler, those resources had fewer contaminants. Water had less impurities. Diamonds, less inclusions. Hell even the shit smelled like roses--well, not really, but that was the joke they all laughed at even though it wasn't funny anymore.